Olefin polymerization catalyst having a bridged phosphole-hetero

Details Olefin polymerization catalyst having a bridged phosphole-hetero Olefin polymerization catalyst having a bridged phosphole-hetero

1998-03-06

2000-09-26

Gupta, Yogendra

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

556 12, 556 30, 556 52, 556 64, 568 12, 106901, 526 90, 502152, 502117, 502162, 502158, C07F 1500, C07F 902

Patent

active

061244872

ABSTRACT:
A new family of metallacycles, which are preferably zirconacycles, is characterized by having a unique halogenated substituent. The metallacycles are useful for the preparation of main group heterocycles, especially two novel families of heterocycles. The first new family of heterocycles preferably contains a halosilyl substituent. A preferred group of the second family of novel heterocycles contains a silyl group having a leaving group bonded thereto. The preferred group of these heterocycles is suitable for preparing novel organometallic complexes having a bridged bidentate heterocyclic ligand. These novel organometallic complexes may be used as catalyst components in olefin polymerization. The subject catalyst components are particularly well suited for use in the medium pressure solution process to prepare linear low density polyethylene.

REFERENCES:
patent: 4404344 (1983-09-01), Sinn et al.
patent: 4542199 (1985-09-01), Kominsky et al.
patent: 5055438 (1991-10-01), Canich
patent: 5057475 (1991-10-01), Canich et al.
patent: 5096867 (1992-03-01), Canich
patent: 5132380 (1992-07-01), Stevens et al.
patent: 5153157 (1992-10-01), Hlatky et al.
patent: 5198401 (1993-03-01), Turner et al.
patent: 5227440 (1993-07-01), Canich et al.
patent: 5374696 (1994-12-01), Rosen et al.
patent: 5387568 (1995-02-01), Ewen et al.
patent: 5399635 (1995-03-01), Neithemer et al.
patent: 5407884 (1995-04-01), Turner et al.
patent: 5434116 (1995-07-01), Sone et al.
Metallacycle Transfer from Zinconium to Main Group Elements: A Versatile Synthesis of Heterocycles.
Paul J. Fagan, William A. Nugent and Joseph C. Calabrese 1994 American Chemical Society , 116 pages 1880-1889.
The Synthesis and Reactionty of Monocyclepentadiecyl Scandium Amide and Acetylacetonato Derivatives, Pamela J. Shipiro and John Bercaw, Dept. of Chemistry, California Institute of Technology, Pasadena, California 91125.
The Influence of Electronic and Steric Effects and the Importance of Polymerization Conditions in the Ethylene Polymerization with Zirconcene/MAO Catalysts, Christopher Janiak, Uwe Versteeg, Katharina C.H. Lange, Roman Weimann, Ekkehardt Hahn, Journal of Organometalic Chemistry 501 (1995) 219-234.

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